Floating screen



May 23, 1950 1.. F. KLlNE 2,508,952

FLOATING SCREEN Filed March 18, 1947 IN VENTOR /4 ,q Leroy E /1//neZQAL'HM Patented May 23, 1950 UNITED STATES PATENT OFFICE FLOATINGSCREEN Leroy F. Kline, Wayne, Mich., assignor to Industrial Wire ClothProducts Company, Wayne, Mich, a. corporation of Michigan ApplicationMarch 18, 1947, Serial No. 735,433

1 Claim. 1

The present invention relates to floating oil screens and has among itsobjects to provide a screen that is more efficient in operation and lessexpensive to construct than the forms heretofore known and used.

Another object is to simplify the construction and installations of suchscreens.

Other objects and advantages will be apparent to those skilled in theart upon reference to the following description and the accompanyingdrawings in which:

Figure l is a plan view of a screen embodying the present invention.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a view in elevation as from the bottom of Figure 1.

As indicated in the drawing, the screen comprises an outer bell memberID provided with a shoulder IUA within which is fixed a shell 1GB so asto provide a float chamber surrounded by a channel l2. Fixed to the edgeof bell It as by crimping as at i3 is a guard or cover H1 disheddownwardly and provided with openings MA and also with a centralcircular boss or dimple MB. The cover it is spaced from the shell 10Bwhich is provided with ribs IUC extending radially of the shell andoutwardly toward the cover I l.

Fixed within the space between the cover I4 and shell |B is a screeningelement 15 of flexible mesh material. This element l5 will be in theform of a disc having its edge secured in the crimp l3 and having at itscenter an opening in which is fixed a grommet l5 of such size as to forma valve with the boss MB. The element I5 is pressed downwardly by theribs EC in shell IUB so that the grommet |6 coacts with boss MB andcloses the central opening in the screen. The ribs IOC, however, do notextend to the center of shell |8B but stop short thereof a sufficientdistance to permit the central portion of the element It to lift fromboss I4B if and when it becomes plugged.

Fixed to the outside of bell l0 and opening thereinto is a tube 2|communicating With the annular space l2. The tube 2| will be bent asshown so that its inbent end portion will extend in a directionperpendicular to a radius of the bell and will be supported by a plate29.

This plate 20 will be formed so that a portion 200 will conform to theoutside of bell l0 while one end will be bent outwardly and at rightangles to the inbent portion of tube 2| which will pass through and befixed to the plate. The

plate, tube and bell will preferably be brazed or otherwise permanentlyfixed together. Plate 20 will be provided with suitable ears 2013serving as stops for the screen assembly and the tube 2| will be upsetto provide a circumferential rib or flange 2|A adapted to coact with aretaining nut (not shown), allowing the screen assembly to swing aboutthe axis of the inbent portion of the tube.

In operation, the device will be supported by the free end of tube 2| inthe inlet of the oil circulating system of an engine with the screenassembly adapted to float in or on the body of oil in the crankcase,with the inlets |4A submerged in the oil. Since the oil enters bysuction, it will normally pass through screening element i5 into theannular space I2 and out through tube 2|. When, however, the element |5becomes plugged with dirt and such, continued suction will open thevalve formed by grommet I6 and boss MB and allow oil flow withoutscreening.

I claim:

A floating oil screen for use in the oil sump of an internal combustionengine, said screen comprising a bell portion enclosing a float chamber,the side wall of said chamber being spaced from said bell to provide anannular chamber, an oil screening element covering the open end of saidbell and annular chamber, a perforated guard plate arranged over saidscreening element and provided with an upwardly extending boss, saidscreening element being provided with an opening opposite to and adaptedto be normally closed by said boss and outlet means leading from saidannular chamber.

LEROY F. KLINE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS- Number Name Date 598,126 Witney Feb. 1. 18981,790,563 White Jan. 27, 1931 1,852,867 White Apr. 5, 1932 1,921,670Gulick Aug. 8, 1933 2,192,438 Gulick Mar. 5, 1940 2,285,997 Mino June 9,1942 2,318,220 Haselwood May 4, 1943 2,335,096 Zech Nov. 23, 19432,448,212 Dewey Aug. 31, 1948

